RU2735456C1 - Set of gas-consuming equipment for belaz-7547 dump truck - Google Patents

Abstract

FIELD: machine building.SUBSTANCE: invention relates to automotive industry. Set of gas-using equipment for dump truck BelAZ-7547 contains tank for liquefied natural gas (LNG), subframe of LNG tank, assembly of pipelines, box for gas fuel supply control system, control panel, power supply unit, flexible pipelines, rigid pipelines, mounting brackets for outlet pipe, protection brackets for exhaust pipe, as well as dump truck crankshaft rpm transducer, exhaust gas temperature converters and gas pedal position transducer.EFFECT: possibility of using mixer from liquid natural gas and diesel fuel at dump truck.8 cl, 16 dwg

Description

The invention relates to transport engineering and can be used for mounting on a BelA3-7547 dump truck to operate it on a mixture of diesel and gas fuels while maintaining the possibility of the engine functioning on standard diesel fuel.

Known automobile chassis with a gas engine, for KamAZ vehicles, containing a folding cabin, under which the engine is located, a frame made of spars and crossbars, an air intake and an air cleaner attached to the cabin at the rear, a battery box mounted on the frame to the left behind the front axle, receivers, two of which are fixed under the battery box, a muffler with an exhaust pipe, a transfer case installed in the middle part of the frame, while a gaseous fuel engine is located under the cab, a cassette with vertically located gas cylinders is installed behind the cab above the frame side members, and on the left and on the right between the front and middle axles, cassettes with horizontally located gas cylinders are installed, in addition, inside the frame on the rear overhang on the right and left and in the middle zone, one receiver is attached to the left side member, and the muffler is installed horizontally in the middle part, on the right under the frame and its exhaust pipe is out goes to the right between the middle and rear axles (RU 103331 U1, 10/04/2011).

A disadvantage of the known equipment consists in the use of gas fuel in the form of compressed gas, which requires a large volume to accommodate gas cylinders.

Known vehicle dump truck KAMAZ, running on gas fuel, in which a bottle with liquefied natural gas is installed on the cradle for a standard fuel tank, on the frame behind the cab are fixed components of the gas supply system to the engine (see KAMAZ on liquid methane: all the details. Internet https.//avtospravochnaya.com/avtomobili/7001, publ. 24.05.2017).

This solution assumes that the engine runs only on gas fuel and does not allow the engine to run on a mixture of diesel and gas fuels.

The closest to the proposed equipment is a set of gas-using equipment of a truck, containing a liquefied gas tank, a liquid pipeline, a gas supply control unit and a gas pipeline, while the LPG tank is installed on one side of the lower part of the car frame, and the gas supply control unit is on the other side of the lower part of the vehicle frame (CN 202528841 U, 11/14/2012).

The technical problem solved by the invention consists in creating a set of gas-using equipment (KGO), which makes it possible to install it on a BelA3-7547 dump truck to operate equipment on a mixture of diesel and gas fuels when using liquefied natural gas as gas fuel.

The technical problem is solved by a set of gas-using equipment for the BelA3-7547 dump truck, containing a tank for liquefied natural gas (LNG tank), an LNG tank subframe, a gas fuel supply control system box, a pipeline assembly, a control panel, a power unit, flexible pipelines, rigid pipelines, a bracket exhaust pipe mountings and exhaust pipe protection brackets.

In a preferred embodiment, the LNG tank includes a supporting frame on which the LNG vessel, fittings, and protective panels are fixed, while the subframe of the LNG tank is designed to be fastened to the dump truck frame and fastening means in the form of twistlocks are installed on it, and on the supporting frame of the LNG tank reciprocal windows for placement of twistlock heads in them with the formation of a quick-release connection of the subframe with the supporting frame of the LNG tank.

In addition, the LNG tank fittings include an LNG regasification system, and on the LNG tank protective panel, there are quick-disconnect fittings for the natural gas delivery line to the system, the gas discharge line of the tank safety system and the coolant supply to the LNG regasifier.

In addition, the piping assembly includes a casing in which there are fittings for connecting the pipelines of the gas-using equipment system and the gas discharge line, as well as a pressure gauge in the natural gas delivery system and a connector for connecting a cable for signaling the level of liquefied natural gas in the LNG tank.

In addition, the gas fuel control system box includes a housing housing the gas control controller, gas pressure and temperature sensors, gas pressure regulator, gas meter with solenoid valves, gas filter, and methane leakage sensor.

In addition, the control panel includes a controller for the explosion safety subsystem, on the control panel housing there are an indicator of the control panel controller, a power switch for the KGO system with a status light indicator, a fuel selection switch with a status light indicator, light indicators for detecting methane leakage and an emergency state of the gas fuel supply control system, a digital indicator of the LNG level in the LNG tank and an electrical connector for connecting the cable.

In addition, the power supply unit includes a voltage converter of the on-board network of the dump truck into a stabilized DC voltage; the power supply housing contains connectors for the cables of the methane leakage monitoring system, the power supply of the KGO system and signal circuits of the KGO system, as well as a power relay and a circuit breaker.

In addition, the kit additionally includes a dump truck engine crankshaft speed converter, exhaust gas temperature converters and a gas pedal position converter.

The invention is illustrated by drawings.

FIG. 1 shows a diagram of the arrangement of the KGO components on a dump truck, left side view.

FIG. 2 - the same, right side view.

FIG. 3 - LNG tank.

FIG. 4 - LNG tank stretcher.

FIG. 5 - a fragment of the LNG tank with a twistlock.

FIG. 6 - hood.

FIG. 7 - location of the hood and battery box on the dump truck.

FIG. 8 - diesel fuel tank.

FIG. 9 - pipeline assembly.

FIG. 10 - KGO box with a bracket.

FIG. 11 is a view along arrow A in FIG. ten.

FIG. 12 - control panel.

FIG. 13 - power supply unit.

FIG. 14 - exhaust pipe mounting bracket.

FIG. 15 - outlet pipe protection bracket.

FIG. 16 - location of the exhaust pipe mounting brackets and exhaust pipe protection brackets on the dump truck frame.

In the diagrams (Fig. 1 and Fig. 2), the tank 1 with liquefied natural gas (LNG tank), the subframe 2 of the LNG tank, the hood 3, the battery protection box 4 (battery box), diesel fuel tank 5 (diesel fuel tank) are shown, node 6 pipelines, box 7 of the gas fuel supply control system (box KGO), control panel 8, power unit 9, flexible pipelines 10 with quick disconnect couplings (BRS), flexible pipeline 11 for supplying gas fuel to the engine, cables 12 of electric wires, flexible pipeline 13 coolant supply, flexible pipeline 14 for return of the coolant, point 15 of the ground connection, rigid pipeline 16 for gas discharge.

The LNG tank 1 includes a supporting frame 17 with protective panels, cradles on which a cryogenic LNG vessel 18 is installed using fasteners (Fig. 3), fittings, pipelines and elements for ensuring operating and emergency modes (not shown). The valve is a system of LNG regasification into natural gas (NG) and includes a heat exchanger-evaporator (LNG regasifier), a receiver, a pressure gauge, a system of valves, valves and pressure regulators (not shown in the drawings). The pneumohydraulic regasification circuit of the LNG tank 2 can be any known from the prior art.

On the protective panel of the LNG tank 2, quick-disconnect fittings of the natural gas supply line to the system, the gas discharge line of the tank safety system and the coolant supply to the LNG regasifier are connected.

The subframe 2 of the LNG tank (Fig. 4) for fastening to the dump truck frame is made in the form of a bracket, which includes a frame 19, on which two consoles 20 (“legs”) are fixed in front, and profile elements 21 at the rear for fastening to the dump truck frame. On each console 20 and between them in the middle part of the frame 19, there are means for fastening the LNG tank 1 in the form of twistlocks 22 having conical heads 23 and screw clamps 24 (Fig. 5). In the lower part of the supporting frame 17 of the LNG tank 1, reciprocal windows 25 are made to accommodate the cone heads 23 of the twistlocks 22.

The hood 3 (side) (Fig. 6) differs from the standard side hood in that it is made opening from the cab side, and the standard hood - from the side of the dump truck deck 26. In addition, the side wall of the hood is perpendicular to its upper wall, while the side wall of the standard hood is inclined. This design of the hood 6 allows you to free up space for the location of the battery box 4 on the deck 26 of the dump truck (Fig. 2, 7). Holes 27 are made in the side wall of the hood 3 for fastening the battery box 4 and for entering the battery cable.

Battery box 4 (Fig. 7) has a rectangular cross-section, in contrast to the standard battery box, which has a triangular cross-section. This allows the battery box 4 to be installed on the deck 26 of the dump truck and the personnel can walk over the lid.

Tank 5 DT (Fig. 8) differs from the standard DF tank in the shape adapted for attaching a standard pneumatic cylinder to it (Figs. 2, 5), on the regular place of which the tank 5 DT should be attached. For this, the tank 5 DT has a side wall with an arcuate recess in cross-section, and with brackets 28 attached to it, forming a lodgement for a pneumatic balloon.

Pipeline assembly 6 is a casing 29 (Fig. 9), in which fittings are fixed for connecting flexible pipelines 11, 13, 14 for gas fuel supply, coolant supply and return and a rigid gas discharge pipe 16, respectively, and a connector for connecting cable 12 of the LNG level signal in the tank 1, as well as quick-disconnect couplings 30, 31, 32 (BRS) connected inside the casing 29 with the corresponding fittings for connecting respectively to the lines for supplying gas fuel to the engine, supplying and returning the coolant to the LNG tank 1 and discharging gas from the LNG tank 1, formed by flexible pipelines 10 with a quick coupler, and an electrical connector 33 connected to the specified connector. In addition, a pressure gauge 34 is attached to the casing to measure the pressure in the natural gas delivery system.

Box 7 KGO has an elongated shape (Fig. 10). The side walls of the box 7 KGO have the shape of a trapezoid, so that it is narrowed at the top and widened at the bottom, which allows it to be placed between the rear wall of the cab and the body of the dump truck. Box 7 of KGO contains the main components for controlling the supply of gas fuel to the engine: a controller for controlling the gas supply system, gas pressure and temperature sensors, a gas pressure regulator, a gas meter with solenoid valves, a gas filter and a methane leak sensor. In the LNG tank 1 and the KGO box 7 there are assemblies and elements of the natural gas supply system and the natural gas supply control system known from the prior art, in particular from the patent RU 154 478 U1. On the bottom side of the box 7 KGO (Fig. 11) there are connectors 35 for cables of electric wires, a gas inlet 36, gas supply fittings 37 to the engine.

The control panel 8 (Fig. 12) located inside the housing is the controller of the explosion safety subsystem, which, upon a signal from the methane leak sensor located in the KGO box, turns off the gas supply to the engine. On the body of the control panel 8 there are an indicator 38 of the control panel controller, a power switch 39 of the KGO system with a status light indicator, a fuel selection switch 40 with a status light indicator, light indicators 41, 42 for detecting methane leakage in the gas fuel supply control system and an emergency state of the feed control system gas fuel, a digital indicator 43 of the LNG level in tank 2, fuses 44 for the power supply of the console and an electrical connector 45 for connecting the cable.

The power supply unit 9 (Fig. 13) contains a voltage converter of the on-board network of the dump truck into a stabilized DC voltage. On the housing of the power supply unit 9, there are connectors 46, 47, 48 of the methane leakage monitoring system cable, the KGO system power cable and the KGO system signal circuit cable, as well as the fuse 49, the power relay 50, the main input circuit breaker 51 and the secondary automatic switch 52.

The KGO also includes a set of converters (sensors) installed on the engine: a crankshaft speed converter of a dump truck engine, exhaust gas temperature converters (4 pieces), a gas pedal position converter (not shown in the drawings).

The KGO also includes a bracket 53 for fixing the outlet pipe 54 (in two parts) (Fig. 14, 16) and two brackets 55 for protecting the outlet pipe 54 (each of two parts) (Fig. 15, 16).

Flexible pipelines 10, 11, 13, 14 are made of pressure hoses MBS (oil and petrol resistant) with straight and / or angle fittings at the ends. Flexible pipelines 10 have quick disconnect connections (BRS) at the ends.

The KGO includes a set of copper pipes, from which a rigid pipeline 16 is assembled (Fig. 1).

Due to the fact that the serial dump truck does not have dedicated places for placing the KGO units, the dump truck must be prepared before their installation.

Free up space for the subsequent fastening of the tank 5 DT. To do this, dismantle the standard battery box, the box brackets and the pneumatic cylinder with the engine start system brackets.

Dismantle the standard (side) hood above the engine. The hood 3 is installed in regular places and fastened with standard bolts. The battery box 4 is mounted side by side on deck 25 to the right of the cockpit (Fig. 7). Standard batteries (2 pieces), a standard charge socket and a standard mass breaker are installed in the 4 battery box. Standard electrical cables are shortened in place.

Tank 5 DT is mounted on the dump truck frame (on the right) on the standard mounting holes of the dismantled pneumatic cylinder. The standard pneumatic cylinder is fixed on the outside of the tank 5 DT using standard fittings. A standard diesel fuel level sensor is used.

The standard bracket for attaching the exhaust pipe 54 (on the left side) is dismantled and a new bracket 53 is mounted on the frame 56 of the dump truck (Fig. 16).

The subframe 2 of the LNG tank 1 is mounted on the dump truck frame 56 on the left side on the standard brackets from the diesel fuel tank with standard fasteners.

Mount brackets 55 to protect the exhaust pipe 54 on the frame 56 of the dump truck (Fig. 16).

On the rear wall of the cab mount box 7 KGO with its own bracket (Fig. 1, 2).

The assembly 6 of pipelines is mounted (Fig. 1), for this, the standard pneumatic receiver (on the left side) is first dismantled and the assembly 6 of pipelines with its own bracket is mounted on its bracket. The standard pneumatic receiver is installed in its original place.

A rigid gas discharge pipeline 16 is installed. Flexible pipelines 10, 11, 13, 14 are installed for gas fuel supply and coolant supply.

Mount converters (sensors) on the engine. The control panel 8 is mounted in the operator's cabin on the upper right and the power supply unit 9 is installed in the back in the upper part. They are connected to each other and to the box of 7 KGO with cables of 12 electric wires.

The LNG tank 1 is quick-detachable. When installing the LNG tank 1, the forks of the loader are inserted into the guides in the lower part of the supporting frame 17 of the tank 1 until they stop against the stops, the forks are raised to the required height, the LNG tank 1 is brought to the dump truck, the LNG tank 1 is lowered down until the guides are aligned with the consoles 20 of the subframe 2. When lowering the LNG tank 1, the matching windows 25 of the supporting frame 17 of the LNG tank 2 and the conical heads 23 of the twistlocks 22 are aligned (Fig. 5). The screw clamps of 24 twistlocks 22 are fixed. The design of the subframe 2 allows you to quickly install the LNG tank 1 on the dump truck and quickly remove it. Performing operations for multiple removal / installation of the LNG tank 1 on the dump truck frame in the event of, for example, performing scheduled maintenance in rooms (garages) that are not designed for the presence of equipment with the presence of gas fuel. If the LNG tank is removed, it can be stored on a special site.

Drawing positions

1 - LNG tank

2 - subframe of the LNG tank

3 - hood

4 - battery box 5-tank DT

6 - pipeline assembly

7 - box KGO

8 - control panel

9 - power supply

10, 11, 13, 14 - flexible pipelines

12 - cable of electric wires

15 - ground connection point

16 - rigid pipeline

17 - supporting frame of the LNG tank

18 - cryogenic vessel LNG

19 - LNG tank subframe frame

20 - consoles

21 - profile elements

22 - twistlocks

23 - conical twistlock heads 22 counter windows

24 - screw terminal

25 - response window

26 - deck

27 - holes in the modified hood 3

28 - staples

29 - casing of the unit 6 pipelines

30, 31, 32 - quick couplings (BRS)

33 - electrical connector

34 - manometer

35 - connectors of cables of electric wires

36 - gas inlet fitting

37 - fittings for gas supply to the engine

38 - controller indicator

39 - power switch

40 - fuel selection switch

41, 42 - indicator lights for methane leak detection

43 - digital indicator of LNG level

44 - control panel power fuse

45-48 - electrical connectors

49 - fuse

50 - power relay

51 - main input circuit breaker

52 - secondary circuit breaker

53 - exhaust pipe mounting bracket

54 - exhaust pipe

55 - outlet pipe protection bracket

56 - dump truck frame

Claims (8)

1. A set of gas-using equipment for the BelA3-7547 dump truck, containing a tank for liquefied natural gas (LNG tank), an LNG tank subframe, a gas fuel supply control system box, a piping assembly, a control panel, a power unit, flexible pipelines, rigid pipelines, a mounting bracket exhaust pipe and exhaust pipe protection brackets. 2. The kit according to claim 1, in which the LNG tank includes a supporting frame on which the LNG vessel, fittings, and protective panels are fixed, while the LNG tank subframe is configured to be attached to the dump truck frame and there are fastening means in the form of twistlocks on it, and on the supporting frame of the LNG tank, counter windows are made to accommodate the heads of the twistlocks to form a quick-disconnect connection of the subframe with the supporting frame of the LNG tank. 3. A set according to claim 2, in which the LNG tank fittings include an LNG regasification system, and quick-disconnect fittings for the natural gas delivery line to the system, the gas discharge line of the tank safety system and the coolant supply to the LNG regasifier are located on the protective panel of the LNG tank. 4. A set according to claim 1, in which the pipeline assembly includes a casing in which there are fittings for connecting pipelines of the gas-using equipment system lines and the gas discharge line, as well as a pressure gauge in the natural gas delivery system and a connector for connecting a cable for signaling the level of liquefied natural gas to LNG tank. 5. The set according to claim 1, in which the gas supply controller, gas pressure and temperature sensors, gas pressure regulator, gas dispenser with solenoid valves, gas filter and methane leak sensor are located in the box of the gas fuel supply control system, and on the bottom side the box contains connectors for cables of electric wires, a gas inlet and gas inlet to the engine. 6. The set according to claim 1, in which the control panel includes an explosion-proof subsystem controller, the control panel controller's indicator, the KGO system power switch with a status light indicator, a fuel selection switch with a status light indicator, methane leak detection and emergency light indicators are located on the control panel housing. the status of the gas fuel supply management system, a digital indicator of the LNG level in the LNG tank and an electrical connector for connecting the cable. 7. The set according to claim 1, in which the power supply includes a voltage converter of the on-board network of the dump truck into a stabilized DC voltage, on the power supply housing there are connectors for the cables of the methane leakage monitoring system, power supply of the KGO system and signal circuits of the KGO system, as well as a power relay and a circuit breaker. 8. The kit according to claim 1, which additionally includes a dump truck engine crankshaft speed converter, exhaust gas temperature converters and a gas pedal position converter.

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